Mail-box alarm.



rented certain new a diagrammatic sectional vieur MONRE .VODABI)GRINDLE, 03F

SANT, 3023A, C ACFORNL.

MAIL-Bex ALA Specification of Letters Yate-nt. Application, led Februaryi3, 18.1.1.

Patented Sept. 3, 1912. semi no. stessi.

To all whom may concern:

Ble it known that I, MONROE wWoonaim GHINDLE, a citizzen of the UnitedStates, residing at Santa Rosa, Sonoma vand State of California, haveinanol useful Improvements in Maildox Alarms, of which the following isn specification.

rlhis invention relates to new and useful improvements in mail boxalarms.

The primary object of this invention is to provide an attachment forordinaryl mail boxes, and Lspecially those used onrural routes, torsounding an, 'alarm when e. letter, postal card or other inail matter isde posited in the box.

The invention consists in the novel features of construction,combination and sie rangement of parte ill ustreted in the draw4 ingsand more particularly pointed out in the appended claim.

ln the accompanying drawings :MFigure l is a perspective View ot' a.rural mail box equipped with my attachment, and Fig. A of theattachnient.

Referring to the drawings for a more particular description oi theinvention, l indiq Cates a meil box such es used on rural routes and 2the alarm.. The alarm comprises the tilting bottoni 3, pivoted near oneend npon the bearing rod l, passing throu h bearing lugs 5 on thehott-oni ot' the tilting bottom and projecting into oppffisite sides, as6, ot the rectangular hox-lilre freine 7. The frame 'i' is placed in thebottom of the mail box, as shown in Fig. l of the drawings and isprovided at one end with the inwardly projecting flange 8 engaged by andacting as a stop tor thefree end of the tilting bottom when in normalposition. One end, as 9, of the tilting bottom, is provided on itsbottom with the rectangular receptacle 1G to be lled or artially filledwith shot ll, inserted throng i the opening l2.

In practice, enough shot is dropped into the receptacle l() through theopening l2 to vto exactly balance the tree end `that even e 1n thecounty of 'inventionwill between the side cause the pivote-d end of thetilting bottom i thereof, postal cai-d deposited in the inail box andtelling on the tilting bottom will cause the .tree end of the letter toswing'down and sound thealnrin.

The alarm is sminded by the tree end of the tilting' bottoni engagingthe Contact or post 13 which establishes the circuit through. thebattery le, the feed and return wires l5 and 16, etc., and rings thebell 17.

From the foregoing description taken in connection with the drawingsitis thought that the construction and advantages of this loe readily7understood without requiring a more extended explanation.

Having described the invention, what claim as new is:

An alarm of class described comprising e .rectangular box likesupporting .traine adopted to lit in the bottom et inail box, e tiltingplatform pivotally mounted in and pieces of the traine, an inwardlypr-.)jecting tlange at one end the traine forming a stop to limit theupward swinging movementof one end of the tilting platform, atransversely disposed ceptncle on the tiottoin o the opposite end of thetilting platform adapted to 'ce .filled withv shot or other motel-iai tocause both ends of the platform to evenly balance each other, an alarm,and Ineens tor completing the circuit to sound the alarm when the firstmentioned end of the tilting platform is swung down by re: son ot aletter or other inail being deposited in the box, the opposite end otthe tilting platform having" en openH ing therein immediately over thereceptacle through which the shot or other material is passed into therefi'optacle,

ln testimony whereof l allix my signature 1n presence of two witnesses.

MONROE WOODARD GRINDLE. 'Witnesses {leonor} Tiioiu?, NASH ENGLAND.

